The ever-changing needs of optical designers requires technology that can keep up with this evolution. II-VI’s 4-axis diamond turning machining incorporates B-axis freedom to expand our capabilities into brand new arenas. This lathe can support parts up to 700mm (28 inches) in diameter. The hydrostatic oil bearing B-axis incorporates a rotary action orthogonal to the X-Z plane with a range up to 350mm in diameter. This technology permits tool-normal manufacturing for steep radii and can be coupled with our Fast Tool and Slow Tool Servo technologies to support various non-rotationally symmetric geometries.